EP0825713A3 - Differential input and/or differential output transversely-coupled surface acoustic wave filter and method - Google Patents
Differential input and/or differential output transversely-coupled surface acoustic wave filter and method Download PDFInfo
- Publication number
- EP0825713A3 EP0825713A3 EP97113082A EP97113082A EP0825713A3 EP 0825713 A3 EP0825713 A3 EP 0825713A3 EP 97113082 A EP97113082 A EP 97113082A EP 97113082 A EP97113082 A EP 97113082A EP 0825713 A3 EP0825713 A3 EP 0825713A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- acoustic wave
- group
- couples
- surface acoustic
- wave filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/0023—Balance-unbalance or balance-balance networks
- H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
- H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
- H03H9/0052—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded
- H03H9/0057—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded the balanced terminals being on the same side of the tracks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/644—Coupled resonator filters having two acoustic tracks
- H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
- H03H9/6459—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode
- H03H9/6463—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode the tracks being electrically cascaded
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US689451 | 1985-01-07 | ||
US08/689,451 US5793266A (en) | 1996-08-12 | 1996-08-12 | Differential input and/or differential output, transversely-coupled surface acoustic wave filter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0825713A2 EP0825713A2 (en) | 1998-02-25 |
EP0825713A3 true EP0825713A3 (en) | 1998-09-16 |
Family
ID=24768528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97113082A Withdrawn EP0825713A3 (en) | 1996-08-12 | 1997-07-30 | Differential input and/or differential output transversely-coupled surface acoustic wave filter and method |
Country Status (3)
Country | Link |
---|---|
US (1) | US5793266A (en) |
EP (1) | EP0825713A3 (en) |
JP (1) | JPH1093388A (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2739232B1 (en) * | 1995-09-26 | 1997-10-24 | Thomson Csf | SURFACE ACOUSTIC WAVE FILTER USING THE COUPLING OF THREE ACOUSTIC CHANNELS |
GB2306821B (en) * | 1995-11-03 | 2000-05-31 | Advanced Saw Prod Sa | Electro-acoustic device |
DE69737555T2 (en) * | 1996-05-23 | 2007-08-09 | Matsushita Electric Industrial Co., Ltd., Kadoma | Acoustic surface acoustic wave filter and multi-level surface acoustic wave filter |
US6801100B2 (en) * | 1996-05-23 | 2004-10-05 | Matsushita Electric Industrial Co., Ltd. | Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same |
US6348845B2 (en) | 1996-05-23 | 2002-02-19 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave filter and multistage surface acoustic wave filter |
JP3239064B2 (en) * | 1996-05-28 | 2001-12-17 | 富士通株式会社 | Surface acoustic wave device |
FR2762458B1 (en) * | 1997-04-18 | 1999-07-09 | Thomson Csf | SURFACE ACOUSTIC WAVE DEVICE HAVING PROXIMITY COUPLING WITH DIFFERENTIAL INPUTS / OUTPUTS |
JP3253568B2 (en) * | 1997-08-29 | 2002-02-04 | 富士通株式会社 | Multi-stage surface acoustic wave filter |
JPH11340774A (en) * | 1998-05-26 | 1999-12-10 | Murata Mfg Co Ltd | Surface acoustic wave filter |
JP2000244275A (en) * | 1999-02-19 | 2000-09-08 | Murata Mfg Co Ltd | Saw resonator filter |
JP3391346B2 (en) | 2000-04-18 | 2003-03-31 | 株式会社村田製作所 | Vertically coupled resonator type surface acoustic wave filter |
JP3402311B2 (en) * | 2000-05-19 | 2003-05-06 | 株式会社村田製作所 | Surface acoustic wave device |
JP4411539B2 (en) * | 2005-08-25 | 2010-02-10 | セイコーエプソン株式会社 | SAW resonator |
US20230009576A1 (en) * | 2021-07-06 | 2023-01-12 | Skyworks Solutions, Inc. | Surface acoustic wave resonator with modulated pitch |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05183372A (en) * | 1991-12-26 | 1993-07-23 | Toshiba Corp | Surface acoustic wave device |
EP0576340A1 (en) * | 1992-06-26 | 1993-12-29 | Thomson-Csf | Surface wave filter with reflective arrays |
EP0600705A1 (en) * | 1992-12-01 | 1994-06-08 | Japan Radio Co., Ltd | Surface acoustic wave filter and mobile communication system using same |
US5365138A (en) * | 1993-12-02 | 1994-11-15 | Northern Telecom Limited | Double mode surface wave resonators |
EP0648015A2 (en) * | 1993-10-08 | 1995-04-12 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave filter |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59131213A (en) * | 1982-07-26 | 1984-07-28 | Toyo Commun Equip Co Ltd | High frequency and narrow band multiple mode filter |
FR2658013B1 (en) * | 1990-02-02 | 1992-04-17 | Thomson Csf | SURFACE ACOUSTIC WAVE FILTER. |
FR2661292B1 (en) * | 1990-04-24 | 1995-07-21 | Thomson Csf | LOW LOSS SURFACE WAVE FILTER. |
US5265267A (en) * | 1991-08-29 | 1993-11-23 | Motorola, Inc. | Integrated circuit including a surface acoustic wave transformer and a balanced mixer |
FR2682833B1 (en) * | 1991-10-18 | 1993-12-03 | Thomson Csf | SURFACE WAVE FILTER WITH FOLDED ACOUSTIC PATH. |
JP3369581B2 (en) * | 1991-11-01 | 2003-01-20 | 株式会社東芝 | Multistage multimode filter and surface acoustic wave filter device |
JP3244386B2 (en) * | 1994-08-23 | 2002-01-07 | 松下電器産業株式会社 | Surface acoustic wave device |
-
1996
- 1996-08-12 US US08/689,451 patent/US5793266A/en not_active Expired - Fee Related
-
1997
- 1997-06-13 JP JP9173175A patent/JPH1093388A/en active Pending
- 1997-07-30 EP EP97113082A patent/EP0825713A3/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05183372A (en) * | 1991-12-26 | 1993-07-23 | Toshiba Corp | Surface acoustic wave device |
EP0576340A1 (en) * | 1992-06-26 | 1993-12-29 | Thomson-Csf | Surface wave filter with reflective arrays |
EP0600705A1 (en) * | 1992-12-01 | 1994-06-08 | Japan Radio Co., Ltd | Surface acoustic wave filter and mobile communication system using same |
EP0648015A2 (en) * | 1993-10-08 | 1995-04-12 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave filter |
US5365138A (en) * | 1993-12-02 | 1994-11-15 | Northern Telecom Limited | Double mode surface wave resonators |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 599 (E - 1455) 2 November 1993 (1993-11-02) * |
SHARIF M A ET AL: "Coupled resonator filters with differential input and/or differential output", 1995 IEEE ULTRASONICS SYMPOSIUM. PROCEEDINGS. AN INTERNATIONAL SYMPOSIUM (CAT. NO.95CH35844), 1995 IEEE ULTRASONICS SYMPOSIUM. PROCEEDINGS. AN INTERNATIONAL SYMPOSIUM, SEATTLE, WA, USA, 7-10 NOV. 1995, ISBN 0-7803-2940-6, 1995, NEW YORK, NY, USA, IEEE, USA, pages 67 - 70 vol.1, XP002072572 * |
Also Published As
Publication number | Publication date |
---|---|
EP0825713A2 (en) | 1998-02-25 |
JPH1093388A (en) | 1998-04-10 |
US5793266A (en) | 1998-08-11 |
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Legal Events
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CTS CORPORATION |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20020201 |